Reply by enazle

That being a contractor saw means the blade may not be true to the table. Check that first, make sure all the bolts underneath are tight. Crank the blade all the way up and measure the distance between a tooth and the table slot at the back and front of the blade. Measure the same tooth by rotating the blade. A 1/100th” is acceptable. Now Mount the fence and clamp it down and do the same for the distance between the fence and the blade. I think you will find your fence and or table top are not parallel to the blade. If all are true then you need to make a catch table you can mount behind the saw to support your boards. A spring board will also help.